What question would you ask Bill Gates if you had the chance?

Gates, the billionaire founder of Microsoft and philanthropist, answered questions ranging from when will he retire (not soon) to if he'd pick up $40,000 lying on the sidewalk (hell, yes) during his fourth Ask Me Anything on Reddit on Tuesday. While some of the questions were silly, others took the chance to ask Gates about the case between Apple and the FBI and why he's not running for president.

Check out some of the most interesting questions-and-answers below.

Apple vs. FBI.

One of the most interesting questions posed to Gates was what he thinks about how Apple continues to fight the FBI against unlocking the iPhone belonging to one of the terrorists behind the San Bernardino shooting.

"I think there needs to be a discussion about when the government should be able to gather information. What if we had never had wiretapping? Also the government needs to talk openly about safeguards," Gates wrote.

Gates deflected the question a bit and said that people think the government should have the power to access information in criminal investigations only.

"I think very few people take the extreme view that the government should be blind to financial and communication data but very few people think giving the government carte blanche without safeguards makes sense," he wrote. 

He also said laws need to be made quickly and consistently across different countries. Gates did not come out and say if he'd unlock the phone or not, but he did provide his thoughts on what he would do if he were running Apple.

"Maybe they could propose an overall plan for striking the balance between government being able to know things in some cases and having safeguards to make sure those powers are confined to appropriate cases. There is no avoiding this debate and they could contribute to how the balance should be struck," he wrote.

Regulating artificial intelligence.

Reddit users also wanted to know what Gates thought about robots and artificial intelligence. One Reddit user asked Gates if he supports Elon Musk's and Stephen Hawking's idea of regulating artificial intelligence to prevent a robot-led holocaust against humanity.

"I haven't seen any concrete proposal on how you would do the regulation. I think it is worth discussing because I share the view of Musk and Hawking that when a few people control a platform with extreme intelligence it creates dangers in terms of power and eventually control," Gates writes.

On running for president.

For all of the Gates lovers out there, don't get your hopes up that he will run for president.

"I like my current job at the Foundation better than I would being President. Also I wouldn't be good at doing what you need to do to get elected," he writes. "I thought Michael Bloomberg was thoughtful about why it didn't make sense for him to try and run even though he is a great executive."

On retirement and vacation.

The dream is to retire young, right? Not for Gates. He might not run Microsoft anymore, but the Gates Foundation keeps him busy. When asked if he plans to retire soon, he said no.

"I love my work. I love meeting the scientists and field workers," he wrote. "I have the flexibility to work less if I wanted to and I do take vacations now. When I was in my 20s I didn't believe in vacation so I have mellowed. I feel super lucky that I can be involved in the Foundation work with Melinda for another 30 years assuming my health holds up."

Advice to a high schooler.

Sprinkled throughout the questions were genuine pleas for advice. A high school graduate asked Gates if he has any advice for moving forward in life.

"I think the value of getting a great education--that is going to college--is easy to underestimate. The most interesting jobs require a college education," he wrote. "The STEM related jobs are probably the most interesting although they are not for everyone. The value of staying curious--reading a lot and learning new things even after college is also underestimated."